HP CP6015dn Service Manual - Page 433

Table 7-4 Control-panel messages (continued) Control panel message Description Recommended action 66.12.13 Finisher error - stack trailing-edge motor (M39) Control panel diagnostics: M39 process motor (stack trailing-edge assist motor) In order to improve stacking performance when ejecting copies, a trailing edge assist guide is used in addition to the stack ejection roller to support the rear end of the stack during stack ejection. Error occurs when the stacker trailing-edge guide does not leave its home position (PI39) after the stack trailing-edge motor (M39) has been turned on for 3 seconds. Test the swing motor M39 by using the finisher component test from the controlpanel display. ● If the trailing-edge assist guide does not move, perform the following steps: ◦ Verify that connector J722 on the stacker controller PCA is fully seated and not damaged. Also check the wiring at motor M39 and sensor PI39. ◦ Replace the operation-tray assembly (processing tray). See Positioning plate unit (inner sideplate assembly) (booklet maker only) on page 700. ◦ Only if the error persists and the previous steps fail to correct the problem, replace the stacker controller PCA. See Stacker controller PCA on page 737. ● If the trailing-edge assist guide does move, perform the following steps: ◦ Carefully clean the sensor body by gently blowing clean air across the sensor to remove dust and debris. ◦ Verify that the sensor flag is not damaged, moves freely, and is correctly aligned with the sensor body. ◦ Verify that connector J722 on the stacker controller PCA is fully seated and not damaged. Also check the wiring at sensor PI39. ◦ Replace the operation-tray assembly (processing tray). See Positioning plate unit (inner sideplate assembly) (booklet maker only) on page 700. ◦ Only if the error persists and the previous steps fail to correct the problem, replace the stacker controller PCA. See Stacker controller PCA on page 737. ENWW Control-panel messages 391